(;GM[1]FF[4]SZ[19]
GN[Diagram 3 (21 to 30)]
PC[http://senseis.xmp.net/?NakayamaLadderProblem/Solution]AP[GoWiki:2009]
DT[2009-05-12]
C[Diagram from http://senseis.xmp.net/?NakayamaLadderProblem/Solution

Diagram 3 (21 to 30)]
PL[B]

AB[fd][fe][bf][cf][df][ef][ff][gf][hf][if][jf][ag][fg][kg][ah][fh][kh][ai][fi][ki][bj][cj][dj][ej][fj][gj][hj][ij][jj][fk][fl][jn][qn][rn][fo][jo][no][fp][jp][np][op][rp][sp][fq][jq][nq][qq][gr][hr][ir][jr][kr][lr][mr][pr][fs][ps]
AW[ea][ab][sb][sc][dd][ed][gd][ae][ee][ge][he][ie][je][le][re][af][kf][bg][cg][dg][sg][ch][dh][eh][lh][bi][ci][di][ei][aj][kj][sj][ak][bk][gk][jk][bl][dl][hl][gm][en][pn][ao][oo][qo][ro][so][pp][qp][oq][pq][er][nr][or][rr][bs][gs][hs][is][js][ks][ls][ms][ns][os]

;B[sn]C[B1]MN[1]
;W[po]C[W2]MN[2]
;B[pm]C[B3]MN[3]
;W[on]C[W4]MN[4]
;B[om]C[B5]MN[5]
;W[nn]C[W6]MN[6]
;B[mn]C[B7]MN[7]
;W[nm]C[W8]MN[8]
;B[nl]C[B9]MN[9]
;W[mm]C[W10]MN[10]

;
)
